User input starting with http doesn't sort suggestion results properly

[bbondy]

I noticed a test failure in urlbarSuggestions where URLs were being sorted out of order.
It turned out to be because the test was matching http://localhost... But starting with user input h, it would wrongly search inside the string and find a mach in localhost, but really the test (or user) is just trying to type an http prefix. To fix this I have a url normalization mode which is always entered unless the user starts with one of these:
h
ht
htt
http
http:
http:/
http://
https
https:
https:/
https://
w
ww
www
www.

Steps to reproduce for QA:

1. cd test/fixtures
2. python -m SimpleHTTPServer 8089
3. load http://localhost:8089/page1.html
4. load http://localhost:8089/page2.html
5. new tab
6. close first tab
7. type ht notice (page2 gets priroritized)
8. type htt notice (page1 gets prioritized?!?!)

The fix was on 8 so now it will keep page2 prioritized.